Flanging machine



June ze, 1923. 1,460,167

H.MCCABE v y FLANGING MACHINE Filed June 2. 1920 Patented .lune 26, 1923.

Unirse STATES' Pme-f@eeen I HUGH McCann, or LAWRENCE, MASSACHUSETTS.

FLANGING MACHIE.

` Application fledjune 2,

` skilled `in the art to whichV `it 3ap'pertains*tol malreand use `the same.y t t y. "This invention relates toa Hanging machine, and more particularly ytoy a Hanging machine of the type` disclosed in the patent to Hugh McCabe No. 1,030,416, dated June 25, 1912, uponv which' thelkpresent invention` isan improvement.

"'The`-Hanging maohinef disclosed in the above mentioned patenti operates to form 'a flange by bending thematerial Vstep by step.- 'Duringeach step., vsuccessive adjacent incrementsofthefiangefarebent through a partottheangle to vvhich it is desired tol bend the same to form the `completed flange. The flange is bent down by the engagement of Ia bender with successive adjacent portions of the flange, the bender being, oscillatedfrepeatedly" ythrough ,the same Aangle, and.' they completed flange is formed preferably in three successi'vesteps` n In forming' flanges on metal plates, and particularly on plates having any degree of resiliency,` theflange (springs back ksome- Whatl after itis bent bythe bender. For eX- ample, when the firstinc`rement "of the flange is bent down; through an angle oi",

say, 40, and the bender is released, the' flange springs back somewhat sof that. it

does not occupyv a position 'corresponding to an angle of 40, but, on the' contrary, occupies a positioncorresponding toy an angle somewhatless than 40". In'asmuch as the Work isfedlaterally through the machine after each oscillation of the bender, yit Will tbe apparent that this spring back of the meta-l interferes Withv the feedingfof 'the worlr through' Athe machine. It isimportant therefore that after4 the initial increment oit the second and third steps `ofthe Hang` ving operation provision be made for positioning the arc of oscillation of thel bender tofreturn the latter's'uHiciently"lso"` that it Will be clear of the flange allovving fort the springback of the latter." In' theabove mentioned patent, amec'hanism is vdisclosed 1920.1 seria; nafssassa t and claimed' for`r accomplishing` this` result.y

Themechanism for positioning the arcof oscillation yof the bender disclosed in theA above mentioned patent includes' `a *dog 500 mountedupon a" collar 4,10l secured `upon a rod 390.'The dog 500 is adapted to be` Inoved Vdown yintothe pathof a rcollar380 carried the'end ofy the, rack lE250y and through `which the rod 390A isextended, -`so asto be` engaged bythe collar 380 upon the returnrnovementof the rack.` 1The dog500 isr normally heldin a raised position by aV coiledspring 510, theconstruction yand arf rangement of which isy illustrated in Fig. 7 `of the patent. y,Provision is `made for auto-` matically moving the dog 500 down into the path oftheeollarBSO Whenever the rack isy disengaged vin `the] operation, of prepositionwith relation' tothe bender segment 240 in 'order to yadvancethe,bender through the successive `steps ofthe Hanging opera,-

tion. For this purpose'rthe :heel of' the dogr 5.00 is''provided `with a lug 501fadapted to be struck by aistop lug `502'e2rtended from the. machine frame as the lug 501 moves down-5 Wardly` when l' the rack is swung;y dovn vand out of engagement with the bender segment to thereby cause the'do'g to swing about` its pivot `and dovvn into a positionmin the pathl of .thecoll'ar 880." `The dog`$500 may `be manually moved into its lowered position by means of'a handle 514. When the handle 514is`s`vvung to the left, viewing Figfl, the yolre'509 is moved to the left therebyreleas-` the compression on they coiledr spring 510 'and permittingthe Weight ofthe dog to move it down. Witlithe handle in "thispovback .of the ."Hange.l yThis angle is slightly greater than 30.0. 'The' first step of `Hange bending is secured by repeated oscillations of thebender through its normal arc across the` entire length of the Work. After the last increment of the flange of thisfirst step` has been bent .down and the rack is' in its eX-V tended position, ythe handle 290isswungvto theright,`thereby disengaging the rack from the bender segment and at the same time causing the dog 500 to be lowered into the path of the collar 380 by the engagement of the lug 501 with the stop 502. The rack is then run back until the collar 380 strikes the dog 500 and operates to move the rod 390 to the right and thereby shut 0H' the supply of air to the cylinder 270. The rack is then reengaged with the bender segment and again run forward causing the initial oscillation of the bender of the second step of the Hanging operation through an arc of approximately o. lVhen the rack'is re-engaged, the coiled spring 510 (the handle 514 being in its extreme position to the right) operates to immediately lift the dog 500 out of the pathof the collar 380. When, therefore, therack is again run back after the initial downward stroke of the bender upon the second step of the Hanging operation, the

4collar 3,80 passeslunder the dog 500V and the bender is returned approximately 10o clear of the flange.y The second step of the Hanging operation from thispoint is carried on in the usual'manner by repeated oscillations of the bender through an angle of approximately 40?v and thereby advancing the flange through an angle which approximates 30. In this manner the normal arc of oscillation of the bender is positionedso as to enable thefwork to be freely fed through the Inachine,l Afterthe last increment ofthe second step of the flange has been turned down the rack 250 is in an extended position and is now disengaged from the bender segment by the handle 290 which againoperates to automaticallyv lower the dog 500 in the path of the collar 380. The rack is then run r back (while disengaged) until the collar 380 40 strikes the Adog 500and thereby cuts off further movement of the rack. At this point the rack is re-engaged and the initial incre-` ment of the last step of the Hange is turned down through an angle of approximately 30o. The dog'` 500 is immediately raised by the action of the spring 510 so thatwhen the rack is run back the collar 380 passes under the dog and the bender is returned clear of the flange. rlhe third step of the Hanging loperation is now carried on until the `last increment of the third ste-p has beenturned down, thus'forming a completed Hange (after the Hange has sprung back) of substantially 90.

In order toreposition the rack with relation to the bender segment so as to return the bender Vto its4 initial starting point, the handle 514 is swung to the left, thereby lowering thedog 500 into the path of the collar 380. lt will be observed that the dog 500 will be maintained in its lowered position until the handle 514` is manually swung to the right again. With this in mind the rack is run back from its extended position without being disengaged from the benderk segment until the collar 380 strikes the dog 500. This returns the bender approximately 300. The rac-k is then disengaged, run forward, re-engaged, and then run back, returning the bender through a second angle of approximately 30 being stopped when the collar 380 strikes the dog 500. The rack is now disengaged, run forward, re-engaged and run back. At any time after the rack has been re-engaged for the second time, the handle 514 is swung to the right, thereby lifting the dog 500 so that the collar 380 1s permitted to pass beneath the dog as the rack is run back and the bender is thereby returned through a final angle of approximately 400 and to its initial position. While this construction operates successfully, it has been found to be too delicate and frail for use by the class of labor which is usually employed to operate Hanging machines of this type with the result that the mechanism is more or less easily broken and the continuous operation of the machine Vinterfered with.l

The object of the present invention is to provide a Hanging machine of the type mentioned'with an improved device for positioning the normal arc of oscillation of the bender to enable the work to befed freely through the machine. The improved de'- vice is of-strong and substantial construction, capable of withstanding abuse and accomplishes the desired object in av positive and superior manner,

Theinvention consists in the Hanging machine hereinafter described and larly defined in the claims.

rIn the drawings in which the preferred embodiment ofthe invention is illustrated, Figure 1 isl a side elevation of the Hanging machine; Fig. 2 is an enlarged side elevation of the compensating device in its locked position; Fig. 3 is a plan of the left hand end of the device shown in Fig. 2 in its inoperative or normal position; and Fig. 4 is a side elevation of the right hand end of the device shown in Fig, 2 in its inoperative or normal position.

The construction and operation of the Hanging machine is in general theV same asrv that disclosed and full ydescribed in the above` mentioned Mc abe PatentV No. 1,030,416, to which reference may be had.

The improved device for positioning the arc of oscillation of the bender to enable the work to be fed freely through the ymachine is described as follows: The body portion 51 ofthe improved positioning device is loosely mounted upon the rod 390 and is vheld from movement longitudinally of the rod in one direction by a stop collar 52 secured uponv the rod by a set screw 53 and in the other direction by a second stop 54 also secured upon the rod 390. A compression and torsion coil spring 55 servesy by expansion longitudiiiallyyto yieldingly hold` the end of the lbodyy porton'l against the4 stop "collar y52 andwals'o torsionally tov yield-` inglyliold the bodyporton inan inopera.

tive position."` One endmof thebody portion I51'is 'cut away to form" an engaging nose 61 offset 'from thefrod39()` a suiicieiit distance top'erniit passage ofthecollar 380, by the` nose Whenever the 'devicefis in its inopera-4 tive position,"such asisv shown in" plan in FigjV 3Q i A chain 60 is attached-to 'the body portion 5l and to. thevfmachine frame'. y

The'i'unction of the improved positioning r device is exactlytheE sameQas the dog 500 in the above mentionedMeCabepatent. The-` length of the Achain GOis suiiicient so that during`` the first step of the Hanging` operation the rack is vperinittedto move through its entire stroke, 'the 4eollai 380 passing; the noseflaslthe latter isin a horizontalj or inoperative position.l "After the last inr crement of thefiirst step ofthe Harige has ,been turneddoivn and the rack is in` an eX# tended position,`thehandle 29()` isthrown to 'nearly verticalposition through thetension "strikes the nose^61` This operates to stopI i of the'chain 60. Thisplaces the nose'61`ina positionVt-o engage'fthe collar 88() when the rack is run baclnl T he rack is now run back (While still disengaged) yuntil the collar 380 further movement ofjtheraclr." The rack is novv "re-engaged vvvith fthe bender segment,

and the tension onthe chain'GO is thereby removechso thatthe spring 55 operates to tui'n thepositioning 'device toits inoperative position, 'in which the nose lis substan tially` horizontal.

are of oscillationof thebender being posi'- tion'ed so that atfeaclis'troke of the bender f the latter is returned vclear lof the Hange. A'

si-iiiila'r'series of operations oc'ciirwhen the"y rackis disengaged at thecompletion yof the second stepof the Hanging operation.

After' 'the last `increment of the' third' step of the"Hangingoperation has been c'0m-` pleted and the raclr isin an extended posi# tiomthe body portion 51 of theimproved device is manually rotated by` a handle 59 into a vertical position. Provision is made for retaining the device in this position, and for this purpose a latch pin 56 actuated by a spring 57 Within the stop 54 is brought into engagement With a notch 58 in the endof the body portion 51. With the device, locked in its vertical position with the nose 61 in the path of the collar 380, the rack is run back until the collar 380 engages the nose 61 thus returning the bender through an angle of approximately 30. At this point the bender is disengaged, again runy The second ystep of thev Hanging' operation' 'is' no\v"`performed," thef y t saidrod torotate axially aroundthlesalme y and toengage aportion'- of the driving mem?` forward, reengaged andA returnedy until the collar, SO again ystrikes the noseV 6.1, .returin` ing the bender through: a second angle oit' ap.- proxiniately 30.. i, It \vill be observed that thedevice isjloclred the latch pin 5G.` vertical position `during these iirst two Isteps Y o'ffthefreturn.,ofthe bender." After thel- `bender hasbeen 'returned through a second`v angle'` of approXimatelyBOo; therack is disengaged, run forward and re-engaged. i At anytime subsequent to the reengagementof the raclrfor` the second time, the body portion 51 is moved by means of ,the handle 59 so Vas to 'disengage the notchl '581romlthe latch pin'56, thereby permitting the torsion infthe f cfoilspring 55 to return the devicefto an inoperative positionwith the nosell suby r.

stantially'horizontal. `As the [raclbis now returned, the collar 880.passesbylthenosai rthereby permitting the vbender to lbey re- 400 andto its' initial position.,

turned through an angle of'.,approXima'telyf` vvhiie` in 'the interfered embeiiiheiit isf tlieinvention the oscillations of `the bender t ared'escribed as overlapping by an angle of about i100, it is to be understoodlthat they" maybe 'caused' to.' overlap bya diierent i angle.

Having thus ldeseii'bedv the invention, whaty driven fmemiber to advancemthe bender ystep.-

by-step, means for actuatingmthe driving member7 and means tor4 ,limiting lthe return i movement of the `driving member between the' l steps v the Hanging 'operation subs'ef quent to the` first, lineluding` a `kmember operai tively vConnectedwith the drivingtniember actuatingmeans,` and adevice mounted upon i ber I'when lrotated Y into a predetermined posif tion. e,

25A Hanging' machine having, rin rcom-` bination, a driven member, a bender actuated` thereby,` a` drivingfmember adapted to be` moved intoaiid out oftengagement With the iwf..

driven' member to advancethe bender step by stepf,""aiid `rotatable device adapted to` be automatically rotated a certain amount into a normal operatingposition When the driving member isi disengaged from the driven member between the steps in the Hanging `operation subsequent to the firstj so as to beengaged by the driving member-upon its return stroke to limit the same, andy upon subsequent engagement of the driving member `with the driven member to be automatically returned toan inoperative position so that `movements of the bender are positioned to returny the benderyclear of the Harige, said device having means whereby itis automat-i` cally lockedin a position to be' engaged by y 3ov the ydrivingv member when rotatedbeyond its norma-l loperatingl position. 3. A Hanging machine having, in combination, ladriven member a bender actuated v thereby,a driving member capable of being moved into and out of engagement with the driven member to advance the' bender stepby-step, means for actuating the driving member, and means for limiting the return movement ofthe driving member between the steps in the Hanging operation subsequent to the Hrst,including a member connected with the vdriving member actuating means`,a device mounted upon the memberr to rotate axially around the member, aspring cooperating' with said device for urging it to rotate into a position out of engagement with the driving member, and means for rotating it into a position toY be engaged by the driving member under predetermined con-v ditions of. operation. y r

4:. Aflanging machineI having, in combination, n actuated thereby, a rack for actuatingthe bender segment adapted to be moved into and out of engagement with the bender segment to advance the bender step by step,

`power operated means forl actuating the rack, power'controlling means and a rotatable device cooperating with the power controlling means adapted tof be automatically rotated a certain amount into a `normal operating position when the rack is disengaged from the segment between the steps ofthe Hanging operation subsequentV to the Hrst, so as to be automatically returned to an.

inoperative vposition when the rack is again engaged with the segment, whereby. thev oscillations ofthe bender yare positioned to return the bender clear of the Hange, said a bender segment, a bender device having means whereby it is automatically locked ina position to be engaged by the rack when rotated beyond its Vnormal operating positiony 5. A `Hanging machine having, in combination, a driven'memben'a bender actuated thereby, a power operated driving member adapted tol bel moved into and out of engagement with the driven member to advance the-'bender4 stepby step, power controlling means, and av rotatable device cooperating therewith to position theI movements of the bender between the. steps in the Hanging operation subsequent to the Hrst so lthat the bender is returned clearl of the Hange, said device comprising a` supporting rod, operatively connected with the power controlling means, y a' casing rotatably mounted on the rod and having an engaging nose adapted to engage a portion of the driving member when the casing is rotated into a normal'operating position and to per-` mit free movement thereof Whenithe casing is rotated into an inoperative position, a

spring for normally holding the casing in its inoperative position, a lchain having one end attachedto the cas-ing and the other end n attached toV affixed portion of the Hanging machine and arrangedto cause the casing to rotate into a normal operating position when the driving member is moved out'of. l

engagement with the driven member, a locking. device adapted to lock the casing when the latter is rotated beyond its normal member connected with the bender actuating` means a rotatable devicemounted upon said member to rotate axially around the same, a spring normally acting to hold the device in inoperative position, andmeansfor locking the device in its operative position.

7. A Hanging machine having, in combination, a bender, a bender segment carrying v the bender, a rack for actuating the bender,

means for `disengagingv the rack yfrom the segment, means for limiting the return movementof the rack `while disengaged from the segment,I comprising. a member connected" with the bender actuating means a rotatable device mounted Vupon said member to rotate axially around the same, a spring normally acting to hold the device ininoperative position, and means for locking the device in its operative position. 1 f

f l HUGH MoCABE. 

